[Andrew Pons]

Not sure if this issue has been resolved but the way that I fixed it (on OS X 10.11 El Capitan) was to delete the After Effects Preferences folder in the library. Navigate to /Users/youruserfolder/Library/Preferences/Adobe/After Effects and delete the most current preferences folder. Next time you start After Effects it may ask you if you want to import your settings from a previous version of AE. I chose NO to this option, just incase it was migrating the problem from an older version. This fixed my issue.